目的了解济南地区农村改厕对蝇类种群密度的影响，评价农村改厕的卫生效果。
Objective To know the toilet reforms influence to the flies species density in the countryside of Jinan, evaluating the sanitary result of toilet reform of countryside.
目的了解济南地区农村改厕对蝇类种群密度的影响，评价农村改厕的卫生效果。
Objective To know the toilet reforms influence to the flies species density in the countryside of Jinan, evaluating the sanitary result of toilet reform of countryside.
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